A good part design reduces the requirement of tight mechanical tolerances to perform correctly. Manufacturing costs can be reduced. This is preferable to a desi

A good part design reduces the requirement of tight mechanical tolerances to perform correctly. Manufacturing costs can be reduced. This is preferable to a design that requires tight tolerances to function equivalently. Maybe in terms of fit and finish of the interior or the exterior panels superior 'precision' is a desirable attribute. But this still reads a little odd to an engineer.